1.在NuGet中添加 ZXing.Net

2.实例代码

/// <summary>

/// 识别图中二维码

/// </summary>

/// <param name="barcodeBitmap"></param>

/// <returns></returns>

private string DecodeQrCode(Bitmap barcodeBitmap)

{

BarcodeReader reader = new BarcodeReader();

reader.Options.CharacterSet = "UTF-8";

var result = reader.Decode(barcodeBitmap);

return (result == null) ? null : result.Text;

}